Lockitron is compatible with any Smartphone thanks to our mobile website. Older phones can use Lockitron through simple text message commands. Lockitron connects to the internet thanks to built-in WiFi. You can control Lockitron and receive notifications from Lockitron anywhere in the world. If you use an iPhone 4S or iPhone 5, you can enable Lockitron to sense when you walk up to the door and unlock for you using Bluetooth 4.0.
Via : lockitron.com